Subaru Legacy 2003 Factory Service Repair Manual

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🏷️ Basic Information Identification Make: Subaru Model: Legacy Year: 2003 Codes Chassis Codes: BP (Wagon), BL (Sedan) 👋 Introduction Market Position Segment: Mid-size sedan and wagon. Target Audience: DIY enthusiasts,...

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标签: 2003 Car Cars Legacy Misc Subaru

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Legacy

Year:

Codes

Chassis Codes:

BP (Wagon), BL (Sedan)

👋 Introduction

Market Position

Segment:

Mid-size sedan and wagon.

Target Audience:

DIY enthusiasts, independent repair shops, professional mechanics.

Competitive Analysis

Competitors:

Toyota Camry, Honda Accord, Mazda Mazda6, Nissan Altima.

Key Features

Standard AWD:

Subaru's signature Symmetrical All-Wheel Drive system offered on most variants.

Engine Options:

Horizontally opposed ('boxer') engines for a lower center of gravity.

Body Styles:

Available in both sedan (BL) and wagon (BP) body styles.

📋 Manual Details

Coverage Areas

Coverage Scope:

Comprehensive factory service and repair for all systems of the 2003 Subaru Legacy.

Page Count

Estimated Page Count:

~2000+

Manual Type

Type:

Factory Service Manual (FSM)

Language

Language:

English

Format

Format:

Digital (PDF, likely)

📖 Manual Coverage

Systems Covered

Engine:

2.5L Naturally Aspirated EJ25, 2.5L Turbocharged EJ255 (GT models)

Transmission:

4-Speed Automatic (4EAT), 5-Speed Manual

Drivetrain:

Symmetrical All-Wheel Drive (AWD) system, differentials, axles, driveshafts.

Suspension:

Front MacPherson struts, Rear multi-link independent suspension, sway bars, bushings.

Brakes:

Front ventilated discs, Rear solid discs (standard), ABS system.

Steering:

Hydraulic power steering system.

Fuel System:

Fuel injection, fuel pump, injectors, fuel lines, fuel tank.

Cooling System:

Radiator, thermostat, water pump, coolant hoses, fan system.

Exhaust System:

Catalytic converter, mufflers, exhaust pipes, oxygen sensors.

Electrical System:

Battery, alternator, starter, ignition system, lighting, wiring diagrams, fuses, relays.

Climate Control:

HVAC system, A/C compressor, refrigerant, heater core, blower motor.

Body And Interior:

Exterior lighting, interior lighting, power accessories (windows, locks, mirrors).

Procedures Included

Maintenance:

Oil changes, filter replacements, fluid checks and changes, spark plug replacement, belt replacement.

Diagnostics:

Troubleshooting guides, symptom-based diagnostics, OBD-II diagnostic codes, specific system diagnostics.

Repair:

Engine mechanical repair, transmission overhaul, brake system repair, suspension component replacement, electrical component repair.

Adjustments:

Wheel alignment procedures, parking brake adjustment, throttle cable adjustment.

Disassembly Assembly:

Step-by-step instructions for removing and installing major components and sub-assemblies.

Technical Depth

Depth:

In-depth technical specifications, repair procedures, diagnostic information, torque values, tolerances, and wiring diagrams.

📊 Manual Specifications

File Format

Searchable Text:

Likely Yes (for PDF format), allowing for quick information retrieval.

Print Quality

Illustration Quality:

High-quality, clear diagrams and illustrations.

Binding Type

Binding:

N/A (Digital format)

Paper Type

Paper Quality:

N/A (Digital format)

⚙️ Engine Specifications

Primary Engine

Engine Code 1:

EJ253 (2.5i, 2.5i AWD)

Displacement 1:

2.5 Liters (2498 cc)

Configuration 1:

Naturally Aspirated, Horizontally Opposed 4-Cylinder (Boxer)

Horsepower 1:

165 hp @ 5600 rpm

Torque 1:

166 lb-ft @ 4000 rpm

Fuel System 1:

Sequential Multi-port Fuel Injection (MPI)

Optional Engine

Engine Code 2:

EJ255 (GT, GT Limited)

Displacement 2:

2.5 Liters (2457 cc)

Configuration 2:

Turbocharged, Horizontally Opposed 4-Cylinder (Boxer)

Horsepower 2:

210 hp @ 5600 rpm

Torque 2:

235 lb-ft @ 3600 rpm

Fuel System 2:

Sequential Multi-port Fuel Injection (MPI) with Turbocharger

Engine Management

Engine Control Unit (ECU) with diagnostic capabilities.

Emissions:

California Emission Standards (LEV), Federal Emission Standards (ULEV/PZEV).

🔧 Transmission

Standard

Transmission Type:

5-Speed Manual Transmission (Part-time AWD on some models, Full-time AWD on others).

Optional

Transmission Type:

4-Speed Automatic Transmission with Electronic Control (4EAT) and Subaru's All-Wheel Drive System (Active AWD).

Features

AWD System:

Symmetrical All-Wheel Drive with viscous coupling center differential (manual) or electronically controlled multi-plate transfer clutch (automatic).

📐 Dimensions

Exterior Sedan

Length:

187.2 inches

Width:

69.7 inches

Height:

56.1 inches

Wheelbase:

104.0 inches

Exterior Wagon

Length:

189.0 inches

Width:

69.7 inches

Height:

57.5 inches

Wheelbase:

104.0 inches

Weights

Curb Weight Base:

Approx. 3200 lbs (depending on trim and transmission)

Gross Vehicle Weight Rating:

Approx. 4500 lbs

Towing Capacity:

1000 lbs (check owner's manual for specific limitations)

Wheels And Tires

Standard Wheel Size:

16-inch alloy wheels

Optional Wheel Size:

17-inch alloy wheels (GT models)

Standard Tire Size:

205/55R16

Optional Tire Size:

215/45R17 (GT models)

Bolt Pattern:

5x100mm

🛡️ Safety Features

Ratings

NHTSA Front Impact:

4-star driver, 4-star passenger

IIHS Side Impact:

Active Features

Anti-lock Braking System (ABS) standard.

Traction Control:

Traction Control System (TCS) available on some models.

Electronic Stability:

Vehicle Stability Control (VSC) available on some models.

Passive Features

Airbags:

Front dual-stage airbags, front side-impact airbags (optional).

Seatbelts:

Pretensioner seatbelts with force limiters.

Child Anchors:

LATCH (Lower Anchors and Tethers for CHildren) system.

💡 Technology Features

Infotainment

Audio System:

Standard AM/FM/CD player with 4 or 6 speakers. Optional premium audio with subwoofer.

Navigation:

Optional factory navigation system.

Driver Assistance

Cruise Control:

Standard cruise control.

Connectivity

Auxiliary Input:

Not typically equipped from the factory; aftermarket solutions available.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,750 miles or 6 months (whichever comes first) under normal driving conditions; consult manual for severe conditions.

Air Filter Replacement:

Every 15,000 miles or 12 months.

Spark Plug Replacement:

Platinum-tipped: 100,000 miles. Iridium-tipped: 105,000 miles (check specific engine and plug type).

Coolant Flush:

Initial: 30,000 miles or 24 months. Subsequent: 15,000 miles or 12 months.

Transmission Fluid Change:

Automatic: 30,000 miles (severe duty) or 60,000 miles (normal duty). Manual: Inspect periodically, change as needed.

Fluid Specifications

Engine Oil Type:

SAE 5W-30, API Certified.

Engine Oil Capacity:

4.8 U.S. quarts (with filter) for EJ253, 5.0 U.S. quarts (with filter) for EJ255.

Coolant Type:

Subaru Super Coolant (Blue) or equivalent phosphate-free ethylene glycol-based coolant.

Transmission Fluid Type Auto:

Subaru ATF HP or DEXRON III/MERCON compatible fluid.

Transmission Fluid Type Manual:

API GL-5, SAE 75W-90 gear oil.

Brake Fluid Type:

DOT 3 or DOT 4.

Known Issues

Head Gaskets:

While the EJ253 generally improved, earlier EJ25s could be prone to head gasket failure; inspection recommended.

Catalytic Converter:

Can become clogged over time, affecting performance and emissions.

Suspension Bushings:

Wear can lead to noise and degraded handling.

Oxygen Sensors:

Can fail, leading to check engine lights and poor fuel economy.

📚 Vehicle History

Brand Heritage

Brand Focus:

Subaru is known for its horizontally opposed 'boxer' engines and Symmetrical All-Wheel Drive systems, often associated with rally racing and outdoor lifestyles.

Model Evolution

Generation:

Third Generation (2000-2004).

Design Philosophy:

A significant redesign from the previous generation, featuring a more modern and rounded aesthetic.

Key Updates For 2003:

Introduction of the turbocharged GT model with the EJ255 engine and 5-speed manual, along with the 4-speed automatic with Active AWD.

Production

Manufacturing Location:

Ota City, Gunma Prefecture, Japan.

🏆 Awards & Recognition

Recognitions

IIHS Rating:

Insurance Institute for Highway Safety (IIHS) Top Safety Pick in some years for its generation.